how do people get active 3d on projectors like barco dci projectors or sony g90 crt that aren't native to that? - AVS Forum
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post #1 of 14 Old 05-12-2013, 11:29 PM - Thread Starter
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I was always curious how people get active 3d on projectors that aren't meant to have active 3d. I thought I saw people mentioning a lumagen in the mix but not much more elaborated. Heck I didn't even think it was possible to get 3d on a sony g90 crt projector at all.
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post #2 of 14 Old 05-13-2013, 07:32 PM
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2 projectors on a polarized screen ??
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post #3 of 14 Old 05-13-2013, 08:03 PM - Thread Starter
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I thought both the Sony g90 and barco 4k I read were single units

The 4k barco you can see in the dci cinema section but here's a link to the g90 referencing a lumagen xs and custom software and he references having only 1 projector and its not polarized as I've said in the title they are active 3d which requires an emitter

http://www.avsforum.com/t/1340441/watching-3d-on-sony-g90
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post #4 of 14 Old 05-13-2013, 08:35 PM
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post #5 of 14 Old 05-13-2013, 10:31 PM - Thread Starter
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Quote:
Originally Posted by Brian B View Post

This will do it, no?

http://www.curtpalme.com/3DTheatrePlus.shtm

B.

Does that work for tvs too like if you had a pioneer kuro? Is the quality good?
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post #6 of 14 Old 05-14-2013, 03:06 AM
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I'll let you know in about 2 weeks. smile.gif
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post #7 of 14 Old 05-14-2013, 09:54 PM - Thread Starter
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Is there another way to do 3d on non 3d devices or is the 3d theater system the only way?
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post #8 of 14 Old 05-15-2013, 05:47 PM
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http://www.curtpalme.com/3DEvolver.shtm

But you are asking on a single device versus two projectors?

B.
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post #9 of 14 Old 05-19-2013, 06:57 AM
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Most CRTs will do 3D, but not ideally so. 1200 lumens to start with simply isn't a lot, plus you'll lose about 20% more light via the glasses. THE green CRTs usually will have some lagging due to the phosphor, but some CRTs came with fast refresh phosphor designed to do 3D, way back in the 90s when that's all that was available.

I still think 3D is a fad, that's the way it's presenting itself on my forum on my site. Some are sticking with it, but by and large, a stellar 2D image via CRT is still the way to go for us CRTers.


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post #10 of 14 Old 05-23-2013, 05:32 PM
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The Barco DCi's do active 3D. For passive 3D you'll need (third party) equipment, like off-set frequency filters from Infinitec or a filter by RealD. BTW, the projection summit next month will see a demo by Necsel and Infitec showing a LASER projector with two times three (RGB) LASERs, with an frequency off-set and filter combination.

"6P 3D Laser Projector
A 6P 3D laser projector means there are six laser primary wavelengths used to create the 3D image. Three RGB wavelenths are used to create the left eye image while three slightly different RGB wavelengths are used to create the right eye image. Such a solution will allow brighter, more efficient and higher contrast 3D images for cinemas, visualization, entertainment, medical, and many other specialized markets. For the first time, Necsel and Infitec will team up to demonstrate their 6P solution at Projection Summit."

Craig Rounds, http://www.avsforum.com/u/7512988/CIR-Engineering, has quite some experience in getting CRT Front Projectors to do 3D, he has a few threads on the subject either here or over at Curt's forum.
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post #11 of 14 Old 07-16-2013, 06:57 AM
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The 3DTheater plus works with my Pioneer Kuro at 1080p. The price you pay is 60 Hz flicker which is very noticeable (to me).
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post #12 of 14 Old 07-25-2013, 01:46 AM - Thread Starter
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Quote:
Originally Posted by mhafner View Post

The 3DTheater plus works with my Pioneer Kuro at 1080p. The price you pay is 60 Hz flicker which is very noticeable (to me).

What do you meqn 60hz flicker?
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post #13 of 14 Old 07-25-2013, 06:58 AM
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60 Hz video enters the Kuro. Half of it is for the right eye, half for the left. The active glasses work at 60 Hz as well. Flickerfree 3D requires more than 60Hz. At 60 Hz flicker is quite visible (30 Hz per eye).
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post #14 of 14 Old 07-26-2013, 02:21 PM
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I don't normally follow threads here so excuse me popping in and potentially not being back. You can email me at support@lumagen.com if you have specific questions.

Our RadianceXE-3D+ can output 720p120 with extra blank time for showing 3D on a 9" CRT projector like the G90 or 9500LC. You would also need our "CRT-3D" box which is our HDMI extender modified to add a PC wired 3D output (only works with the Radiance). The extra vertical blanking gives the phospher extra decay time and so helps eliminate cross-talk between the eyes for 3D on CRT projectors.

One of our dealer/calibrators in Chicage, Craig Rounds, has this setup using a G90. I was able to watch 3D at his place and it looked great. The 3D images were excellent, and I really didn't notice that the resolution was 720p verses 1080p for 3D. I did not have a 1080p 3D projector there to compare to though.

So, if you want 3D on your 9" CRT (8" CRTs should also work) it is doable. You can call us at 503-574-2211 or email support@lumagen.com for more info if this sounds interesting and AV Science sells the RadianceXE-3D+ if you want to pick one up.

Jim Peterson
Lumagen
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